TITLE

THE MYOCARDIAL TEMPERATURE GRADIENT AND VENTRICULAR REPOLARIZATION

AUTHOR(S)
RuDusky, Basil M.; Soloff, Louis A.
PUB. DATE
May 1968
SOURCE
Angiology;May1968, Vol. 19 Issue 5, p256
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Transmyocardial temperature gradients were measured in the left and right ventricles of the dog by percutaneous ventricular puncture and thoracotomy window techniques using thermocouplos made to fit inside 21 gauge, thin-wall, 6-in needles. The temperature gradient of the left ventricle was generally two to three times greater than that of the right ventricle. Measurements of the right ventricular temperature gradient revealed these to be less prone to variation in the same dog and from one dog to another. It is felt that the peak temperature of the left ventricle is located at a point between the middle and outer fourth of the left ventricular wall. Temperature gradients of similar magnitude were obtained regardless of whether the T wave was positive negative, or biphasic. It appears doubtful that the existence of the myocardial temperature gradient plays a significant role in the production of the upright T wave of the electrocardiogram. In view of our present knowledge, a discussion of other factors and their relationship to ventricular depolarization and repolarization are presented.
ACCESSION #
16369279

 

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